An agreement document that is intended to prevent two or more organizations from sharing specific, confidential information with anyone but each other is called:

An RFP (Request for Proposal) is a procurement document used to solicit bids or proposals from potential vendors, not to restrict information sharing.

An NDA (Non-Disclosure Agreement) is specifically designed to legally bind two or more parties to keep defined information confidential and prohibit disclosure to unauthorized third parties. It is the standard legal instrument used to protect proprietary or sensitive information shared between organizations during business relationships or negotiations.

An SLA (Service Level Agreement) defines expected service performance levels between a provider and customer, such as uptime or response time commitments.

An MOU (Memorandum of Understanding) expresses mutual intent to work together but is typically non-binding and does not legally restrict the sharing of confidential information.